Former Bank of the Cascades Clients:

If you haven’t already, be sure to update the phone number for First Interstate Bank’s Client Contact Center (1-855-342-3400). The phone numbers previously used to access Bank of the Cascades’ Customer Support Center will not work as of March 6, 2018.

South Dakota Scholarship

First Interstate Bank and the South Dakota Banker's Association will award $1,000 college scholarships to local South Dakota High School seniors.

Learn More
School

One Class at a Time

First Interstate Bank and local TV Stations in the community have formed a partnership to show our commitment to education through our "One Class at a Time" weekly grant program.

Learn More

News Archive

Recent Headlines